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P0B80 OBD2: Hybrid Battery Voltage Sense "N" Circuit Intermittent/Erratic

P0B80 OBD2: Hybrid Battery Voltage Sense “N” Circuit Intermittent/Erratic

The P0B80 code is an OBD-II trouble code that indicates an issue with the hybrid battery voltage sense “N” circuit. It is often associated with hybrid vehicles that utilize a high voltage battery pack to assist with propulsion and efficiency.

What Does the P0B80 Code Mean?

When the vehicle’s High Voltage Control Module detects an intermittent or erratic signal from the hybrid battery voltage sense circuit, it triggers the P0B80 code. This indicates that there may be a problem with one or more of the mini-batteries within the high voltage battery pack.

What Causes the P0B80 Code?

Several factors can contribute to the P0B80 code being set, including:

  • High voltage battery connection failure
  • High voltage battery assembly failure
  • Wiring issues within the high voltage system

What Are the Symptoms of the P0B80 Code?

The primary symptom associated with the P0B80 code is increased fuel consumption. Drivers may notice their vehicle is less efficient than before, resulting in more frequent refueling.

How Serious Is the P0B80 Code?

The P0B80 code is considered urgent as it could lead to significant malfunction of the hybrid battery system. Ignoring this code may result in severe damage to the vehicle or pose safety risks to the driver and passengers.

6) How to Diagnose the P0B80 Code

Diagnosing the P0B80 code typically involves:

  1. Scanning the vehicle’s computer for diagnostic trouble codes
  2. Inspecting the high voltage battery connections for signs of damage or corrosion
  3. Testing the battery assembly and individual mini-batteries for performance issues
  4. Checking the wiring and connectors for continuity and integrity

Common Repairs for the P0B80 Code

Common repairs for the P0B80 code may include:

  • Repairing or replacing faulty wiring or connectors
  • Replacing the high voltage battery assembly
  • Ensuring proper connections within the high voltage battery pack

How Much Does It Cost to Fix the P0B80 Code?

The cost to repair the P0B80 code can vary widely depending on the specific issue and the make and model of the vehicle. Expect to pay anywhere from $100 for minor wiring repairs to several thousand dollars if the high voltage battery assembly needs replacement.

Can I Fix the P0B80 Code Myself?

While some aspects of diagnosing and repairing the P0B80 code may be attempted by a knowledgeable DIYer, it is recommended to consult with a professional mechanic, especially when dealing with high voltage systems, to ensure safety and proper handling.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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